concurrency-auditor

concurrency-auditor is an agent for Claude Code from ReviewToolkits/code-review-toolkit. It costs 0 tokens per session (3,706 once invoked), scanned A, original, no licence file.

A code-review agent for finding lock and blocking problems in threaded or asynchronous Python programs. It checks how shared data is protected and how locks are acquired and released.

In plain words
What is it for?
Use it to review Python code for missing locks, check-then-act races, unsafe timeout handling, incorrect release logic, and cycles in lock ordering.
Why use it?
It helps catch race conditions, deadlocks, and unreleased locks that can make concurrent programs behave unpredictably or stop responding.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the code-review-toolkit plugin — 8 commands, 19 agents shipped together

Good fit Use it to review Python code for missing locks, check-then-act races, unsafe timeout handling, incorrect release logic, and cycles in lock ordering.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/reviewtoolkits/code-review-toolkit/concurrency-auditor
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/ReviewToolkits/code-review-toolkit

Made for: Claude Code.

Or install code-review-toolkit, the plugin that ships this one along with the rest of its 8 commands, 19 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for concurrency-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/reviewtoolkits/code-review-toolkit/concurrency-auditor/github.svg)](https://agentmods.dev/agents/reviewtoolkits/code-review-toolkit/concurrency-auditor)
Your own site
<a href="https://agentmods.dev/agents/reviewtoolkits/code-review-toolkit/concurrency-auditor"><img src="https://agentmods.dev/badge/agents/reviewtoolkits/code-review-toolkit/concurrency-auditor/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for concurrency-auditor

Your own site · 80×15
<a href="https://agentmods.dev/agents/reviewtoolkits/code-review-toolkit/concurrency-auditor"><img src="https://agentmods.dev/badge/agents/reviewtoolkits/code-review-toolkit/concurrency-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,706 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.03706
Opus 5.5 $0.00000 $0.01482
Sonnet 5.5 $0.00000 $0.00741
Haiku 4.5 $0.00000 $0.00371

Measured 7d ago against content hash ad82d00d6cad, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

concurrency-auditor scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

`subprocess.run` without `timeout=`, socket reads with no timeout: one stalled peer hangs
plugins/code-review-toolkit/agents/concurrency-auditor.md · 211 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 211 lines · 0 tokens per session scan A ad82d00d6cad

Subscribe to this mod's changes

concurrency-auditor is an agent published in the GitHub repository ReviewToolkits/code-review-toolkit (6 stars, last pushed 7d ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 3,706 tokens. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-31.

Related

concurrency-auditor compared with agents from other repositories

concurrency-auditor next to 6 agents from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
concurrency-auditorReviewToolkits/code-review-toolkitAgent67d agononeA0Claude Code
python-general-engineernotque/vexjoy-agentAgent4464d agoMITA26Claude Code
ps-investigatorgeekatron/jerryAgent375d agononeA31Claude Code
ux-heuristic-evaluatorgeekatron/jerryAgent375d agononeA125Claude Code
pm-market-strategistgeekatron/jerryAgent375d agononeB107Claude Code
django-build-resolverFmarzochi/EGCAgent68yesterdayApache-2.0A53Claude Code
python-devaaronbassett/agent-foundryAgent42mo agoMITB261Claude Code